[vsnet-grb 454041] Announcing the new ICECUBE_CASCADE notice type
Bacodine
vxw at capella2.gsfc.nasa.gov
Sat Aug 1 08:09:48 JST 2020
TO: All GCN Notice recipients
RE: AMON ICECUBE_CASCADE Notice type is available
DT: 31 July 2020
INTRODUCTION:
The GCN system has been modified to incorporate the distribution
of the AMON_ICECUBE_CASCADE Notice type.
The AMON_ICECUBE_CASCADE notice reports on single high-energy neutrino events
in the IceCube instrument -- time of event, direction, energy, & other fields are available.
The time delay is small 30-60 sec.
The AMON_ICECUBE_CASCADE notice reports on single high-energy neutrino events
with high purity (>85% are astrophysical).
Like all the other sources of transient information within the GCN system,
users can elect to receive this AMON_ICECUBE_CASCADE Notice type.
OCCURRENCE RATE:
There will be about 8 AMON_ICECUBE_CASCADE Notices per year.
TIME DELAY:
The time delays for this notice type are very small;
it ranges between 30 and 60 sec.
LOCATION ERROR:
The location uncertainties are in the 3 - 30 deg range (radius, 90% containment, statistical
plus systematics); and 2 - 20deg (radius, 50% containment, statistical plus systematics).
NOTICE TYPE, CONTENT, and PURPOSE:
This notice type contains a discovery of high-energy ( > 10 TeV) neutrinos in IceCube
and their RA,Dec direction with short latency (30-60 sec).
The Notices contain the Event Name, date, time, and the FAR.
ACTION ITEM:
If, after reviewing the information below, you want to receive
these AMON_ICECUBE_CASCADE notices, please send me a request to have them enabled.
You can do this by forwarding this email (which has your sitename identifier, a must-have)
to sbarthel at milkyway.gsfc.nasa.gov .
OR
You can go to http://gcn.gsfc.nasa.gov/gcn/config_builder.html
and select "#2 Modify an existing config" (and type in your sitename).
You can also take this opportunity to make other changes to your configuration.
ARCHIVE STORAGE:
The GCN/AMON_ICECUBE_CASCADE Notices are archived within the GCN website
in the Table of AMON_ICECUBE_CASCADE Notices:
https://gcn.gsfc.nasa.gov/amon_icecube_cascade_events.html
MORE INFORMATION:
Can be found at: http://gcn.gsfc.nasa.gov/gcn/amon.html
NOTICE EXAMPLES:
Here is an example of a full-format email AMON_ICECUBE_CASCADE Notice,
in the VOEvent format, and a pointer to the 160Byte-binary packet format:
(Note all values are made up for this listing of the contents.)
=============================================================================
TITLE: GCN/AMON NOTICE
NOTICE_DATE: Fri 31 Jul 20 17:12:52 UT
NOTICE_TYPE: ICECUBE Cascade
EVENT_NAME: IceCubeCascade-200701b
STREAM: 26
RUN_NUM: 134244
EVENT_NUM: 34406854
SRC_RA: 220.0434d {+14h 40m 10s} (J2000),
220.2371d {+14h 40m 57s} (current),
219.5707d {+14h 38m 17s} (1950)
SRC_DEC: +43.1731d {+43d 10' 23"} (J2000),
+43.0859d {+43d 05' 09"} (current),
+43.3870d {+43d 23' 13"} (1950)
SRC_ERROR: 44.06 [deg radius, stat+systematic, 90% containment]
SRC_ERROR50: 24.17 [deg radius, stat+systematic, 50% containment]
DISCOVERY_DATE: 19031 TJD; 183 DOY; 20/07/01 (yy/mm/dd)
DISCOVERY_TIME: 69893 SOD {19:24:53.44} UT
REVISION: 0
ENERGY: 10.99 [TeV]
SIGNALNESS: 8.7016e-01 [dn]
FAR: 0.4021 [yr^-1]
SUN_POSTN: 131.38d {+08h 45m 31s} +18.02d {+18d 01' 06"}
SUN_DIST: 76.99 [deg] Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN: 273.18d {+18h 12m 43s} -23.86d {-23d 51' 49"}
MOON_DIST: 82.75 [deg]
GAL_COORDS: 76.15, 62.79 [deg] galactic lon,lat of the event
ECL_COORDS: 195.83, 54.53 [deg] ecliptic lon,lat of the event
SKYMAP_FITS_URL: https://roc.icecube.wisc.edu/public/hese_cascades/hese_59031_run00134244.evt000034406854.fits
SKYMAP_PNG_URL: https://roc.icecube.wisc.edu/public/hese_cascades/hese_59031_run00134244.evt000034406854.png
COMMENTS: IceCube Cascade event.
COMMENTS: The position error is the combined statistical and the systematic.
=============================================================================
<?xml version = '1.0' encoding = 'UTF-8'?>
<voe:VOEvent
ivorn="ivo://nasa.gsfc.gcn/AMON#ICECUBE_Cascade_Event2020-07-01T19:24:53.44_26_134244_034406854_0"
role="observation" version="2.0"
xmlns:voe="http://www.ivoa.net/xml/VOEvent/v2.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.ivoa.net/xml/VOEvent/v2.0 http://www.ivoa.net/xml/VOEvent/VOEvent-v2.0.xsd" >
<Who>
<AuthorIVORN>ivo://nasa.gsfc.tan/gcn</AuthorIVORN>
<Author>
<contactName>Icecube Realtime Committee</contactName>
<contactEmail>roc at icecube.wisc.edu</contactEmail>
</Author>
<Date>2020-07-31T17:12:51</Date>
<Description>This VOEvent message was created with TAN VOE version: 1.49 19jul20</Description>
</Who>
<What>
<Param name="Packet_Type" value="176" />
<Param name="Pkt_Ser_Num" value="1" />
<Param name="event_name" dataType="string" value="IceCubeCascade-200701b" ucd="meta.id">
<Description>Comman name for event</Description>
</Param>
<Param name="AMON_ID" value="13424434406854" ucd="meta.id" >
<Description>Alert identification number.</Description>
</Param>
<Param name="run_id" value="134244" ucd="meta.id" >
<Description>Run id.</Description>
</Param>
<Param name="event_id" value="34406854" ucd="meta.id" >
<Description>Event id within a given run.</Description>
</Param>
<Param name="Event_TJD" value="19031" unit="days" ucd="time" />
<Param name="Event_SOD" value="69893.44" unit="sec" ucd="time" />
<Param name="Stream" value="26" unit="dn" ucd="meta.id" >
<Description>IceCube coincidence stream identification</Description>
</Param>
<Param name="Rev" value="0" unit="dn" ucd="meta.id" >
<Description>Alert revision</Description>
</Param>
<Param name="signalness" value="0.8702" unit="dn" dataType="float" ucd="stat.probability" >
<Description>Probability of a neutrino event being astrophysical in origin.</Description>
</Param>
<Param name="FAR" value="0.4021" unit="yr^-1" dataType="float" ucd="stat.probability" >
<Description>False Alarm Rate. Number per year.</Description>
</Param>
<Param name="energy" value="10.9901" unit="TeV" dataType="float" ucd="phys.energy" >
<Description>Likely neutrino energy (in TeV), 5-10% uncertainty.</Description>
</Param>
<Param name="src_error_90" value="44.0584" unit="deg" dataType="float" ucd="stat.error.sys" >
<Description>The position error is the combined statistical and the systematic (90% containment).</Description>
</Param>
<Param name="src_error_50" value="24.1731" unit="deg" dataType="float" ucd="stat.error.sys" >
<Description>The position error is the combined statistical and the systematic (50% containment).</Description>
</Param>
<Param name="Trigger_ID" value="0x0" />
<Param name="Misc_flags" value="0x1a000000" />
<Group name="Trigger_ID" >
<Param name="SubType" value="indi" />
<Param name="Test" value="false" />
<Param name="RADec_valid" value="false" />
<Param name="Retraction" value="false" />
<Param name="InternalTest" value="false" />
</Group>
<Group name="Misc_flags" >
</Group>
<Param name="skymap_fits" dataType="string" value="https://roc.icecube.wisc.edu/public/hese_cascades/hese_59031_run00134244.evt000034406854.fits" ucd="meta.code.multip" >
<Description>Skymap FITS format</Description>
</Param>
<Param name="skymap_png" dataType="string" value="https://roc.icecube.wisc.edu/public/hese_cascades/hese_59031_run00134244.evt000034406854.png" ucd="meta.code.multip" >
<Description>Skymap PNG format</Description>
</Param>
</What>
<WhereWhen>
<ObsDataLocation>
<ObservatoryLocation id="GEOLUN" />
<ObservationLocation>
<AstroCoordSystem id="UTC-FK5-GEO" />
<AstroCoords coord_system_id="UTC-FK5-GEO">
<Time unit="s">
<TimeInstant>
<ISOTime>2020-07-01T19:24:53.44</ISOTime>
</TimeInstant>
</Time>
<Position2D unit="deg">
<Name1>RA</Name1>
<Name2>Dec</Name2>
<Value2>
<C1>220.0434</C1>
<C2>43.1731</C2>
</Value2>
<Error2Radius>44.0584</Error2Radius>
</Position2D>
</AstroCoords>
</ObservationLocation>
</ObsDataLocation>
<Description>The RA,Dec coordinates are of the type: source_object.</Description>
</WhereWhen>
<How>
<Description>GCN</Description>
<Reference uri="http://gcn.gsfc.nasa.gov/gcn/amon.html" type="url" />
<Reference uri="http://gcn.gsfc.nasa.gov/gcn/amon_icecube_cascade_events.html" type="url" />
</How>
<Why importance="1.0">
<Inference probability="1.0">
<Concept>process.variation.burst;em</Concept>
</Inference>
</Why>
<Description>
</Description>
</voe:VOEvent>
=============================================================================
The socket packet (Type=176) contents can be found at:
http://gcn.gsfc.nasa.gov/gcn/sock_pkt_def_doc.html
=============================================================================
REMINDER OF RECENT ADDITIONS TO GCN:
In case you have missed them, here is a brief list of the most recent additions
to the GCN system. You might consider signing up for these Notice types as well.
The full announcements/descriptions for each of these can be found at:
http://gcn.gsfc.nasa.gov/gcn/whats_new.html
LVC_EARLY_WARNING (May 2020) // LIGO/Virgo detection/location_maps of GWs before the merger time
AMON_NU_EM_COINC (May 2020) // AMON Coincidence between neutrino detectors and gamma-ray detectors
LVC Notices are now public (Mar 2017) // The 4 LVC Notices going public
FERMI_GBM_SUBTHRESHOLD (July 2017) // Fermi-GBM triggers below the normal acceptance level
SWIFT_ACTUAL_POINTDIR (Nov 2016) // The actual pointing direction ~1 min after every slew
CALET_LC (Mar 2016) // The Flight- & Ground-produced CALET-GBM lightcurves
Sincerely,
Scott
Scott Barthelmy NASA-GSFC, Code 661, Greenbelt, MD 20771
PHONE: 301-286-3106 (office) CELL: 301-346-3733
EMAIL: scott at milkyway.gsfc.nasa.gov
PAGER: 3013463733 at cingularme.com
WEB: http://gcn.gsfc.nasa.gov/gcn
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